<template>
  <div class="list" ref="wrapper">
    <div>
      <div class="area">
        <div class="title border-topbottom">当前城市</div>
        <div class="button-list">
          <div class="button-wrapper">
            <div class="button">{{this.currentCity}}</div>
          </div>
        </div>
      </div>
      <div class="area">
        <div class="title border-topbottom">热门城市</div>
        <div class="button-list">
          <div
            class="button-wrapper"
            v-for="item of hot"
            :key="item.id"
            @click="handleCityClick(item.name)"
          >
            <div class="button">{{item.name}}</div>
          </div>
        </div>
      </div>
      <div
        class="area"
        v-for="(item, key) of cities"
        :key="key"
        :ref="key"
      >
        <div class="title border-topbottom">{{key}}</div>
        <div class="item-list">
          <div
            class="item border-bottom"
            v-for="innerItem of item"
            :key="innerItem.id"
            @click="handleCityClick(innerItem.name)"
          >
            {{innerItem.name}}
          </div>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import Bscroll from 'better-scroll'
import { mapState, mapMutations } from 'vuex'
export default {
  name: 'CityList',
  props: {
    hot: Array,
    cities: Object,
    letter: String
  },
  computed: {
    ...mapState({
      currentCity: 'city'
    })
  },
  methods: {
    handleCityClick (city) {
      this.changeCity(city)
      this.$router.push('/')
    },
    ...mapMutations(['changeCity'])
  },
  watch: {
    letter () {
      if (this.letter) {
        const element = this.$refs[this.letter][0]
        this.scroll.scrollToElement(element)
      }
    }
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.wrapper)
  }
}
</script>
<style lang="stylus" scoped>
    @import '~styles/varibles.styl'
    //  .border-topbottom{
    //     &: before
    //          border-color: #cccccc
    //     &: after
    //          border-color: #cccccc
    //  }
    //  .border-bottom{
    //      &:before border-color : #cccccc
    //  }
     .list{
         overflow : hidden
         position : absolute
         top : 1.58rem
         left : 0
         right : 0
         bottom : 0        
     }
     .title{
         line-height : .54rem
         background : #eeeeee
         paddiing-left : .2rem
         color : #666666
         font-size : .26rem 
      }
      .button-list{
          overflow : hidden
          padding .1rem .6rem .1rem .1rem
        }
        .button-wrapper{
            float : left
            width : 33.33%
        }
        .button{
          margin : .1rem
          padding : .1rem 0
          text-align : center
          border : .02rem solid #cccccc
          border-radius : .06rem
        }
        .border-topbottom{
            padding-left :.2rem
        }
        .item-list{
            
        }
        .item{
            line-height : .76rem
            padding-left : .2rem
            border-color : #0c0c0c
        }

</style>


